. >> ifill: technology changed the speed and the accuracy with which we learned of the boston attacks. but it also quickly became a platform for the nation's shock and grief. newshour political editor christina bellantoni talked with our daily download team about that. >> for that look at how technology factored into yesterday's tragedy i'm joined by lauren ashburn and howard kurtz, "newsweek's" washington bureau chief and host of cnn's "reliable sources." thanks for being here. after 9/11 we saw people physically putting up photos of their missing loved ones in lower manhattan. yesterday the internet provided a sense of comfort for some. what did we see? >> well, google person finder factored into this. we have a graph that i can show you what it looks like. there's a big button that says "i'm looking for. requests you can type in the name of somebody. or "i have information about" and you can also type in the name of someone. then you can take this tool and embed it on your own web site. so in the aftermath of disaster, howie, it really seems like this tool and others are much more